Photoelectrochemical hydrogen production on InP nanowire arrays with molybdenum sulfide electrocatalysts

L. Gao, Y. Cui, J. Wang, A. Cavalli, A.J. Standing, T.T.T. Vu, M.A. Verheijen, J.E.M. Haverkort, E.P.A.M. Bakkers, P.H.L. Notten

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95 Citations (Scopus)
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Abstract

Semiconductor nanowire arrays are expected to be advantageous for photoelectrochemical energy conversion due to their reduced materials consumption. In addition, with the nanowire geometry the length scales for light absorption and carrier separation are decoupled, which should suppress bulk recombination. Here, we use vertically aligned p-type InP nanowire arrays, coated with noble-metal-free MoS3 nanoparticles, as the cathode for photoelectrochemical hydrogen production from water. We demonstrate a photocathode efficiency of 6.4% under Air Mass 1.5G illumination with only 3% of the surface area covered by nanowires.
Original languageEnglish
Pages (from-to)3715-3719
Number of pages5
JournalNano Letters
Volume14
Issue number7
DOIs
Publication statusPublished - 2014

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